The Cache Control (D7) module provides you with the additional ability to set max-age headers on a page-by-page basis. (3) When the max-age expires, I send the request again: this is what I listen on the server side: and this is what I gather on the client side, using wire-shark. What is Cache-Control and How HTTP Cache Headers Work . < / FilesMatch>. The cache MUST attach Warning 113 to any response whose age is more than 24 hours if such warning has not already been added. HeadersetCache-Control "max-age=2678400, private" </FilesMatch> </IfModule> </IfModule> In the example above, you'll see that some of the file types have "0 seconds" cache time. 相關結果： CDN cache control Cache Control 設定 Cache-Control: no-cache Cache-control must-revalidate Expires headers HTML no cache header example HTML no-cache HTML5 header no cache Js cache Pragma no-cache cache-control max-age cache-control no-cache設定 cache-control no-store設定 html cache-control html cache-control no-cache Add or remove . This cache can be controlled by configuring your Cache-Control HTTP headers for your website This is done by adding mod_expires in the .htaccess file of your server. In Apache, you'll have to set this header manually using the Header set directive, like so: Header set Cache-Control "max-age=84600, public". Header set Cache-Control "max-age=2700" </FilesMatch> </ifModule> Cache-Control Header - Cache-control header uses maximum age for the resources before expiring. Header set Cache-Control "max-age=2700" </FilesMatch> </ifModule> Cache-Control Header - Cache-control header uses maximum age for the resources before expiring. The Cache-Control: max-age is calculated by subtracting the request time from the expiration date and expressing the result in seconds. Add or remove . The base time is either the last modification time of the file, or the time of the client's access to the document. Cache-Control: max-age=<seconds> This directive tells the browser or intermediary cache how long the response can be used from the time it was requested. Header set Cache-Control "max-age=7200, must-revalidate". no-cache도 max-age=0도 결국 캐시에 저장은 하되 무조건 요청마다 revalidate를 . If both Expires and Cache-Control: max-age exist, Cache-Control has priority so the max-age directive overrides the maximum age specified by the Expires header. Mod Expires . Also, Cache-Control is http/1.1 standard and Expires is http/1.0. The Overflow Blog Software is adopted, not sold (Ep. So please add must-revalidate to your Cache-Control header for your .html files. The Max age (D7) module allows you to control cache ages per content type. Changing max-age time for static files. This is the code I use in .htaccess file: <FilesMatch "\. 1 最基本的设置：Cache-control: max-age=[secs] （类似于Expires域的功能） 这个是最最基础的一种策略，[secs]是cache在客户端存活的秒数，例如 Cache-control: max-age=1800 表明cache的时间是半小时,只使用这样一个声明就可以使浏览器能够将这个HTTP响应的内容写入临时目录做cache。 NGINX or Cloudflare proxy servers) ExpiresActive on # Set the default expiry times. Cache-Controlヘッダーでブラウザキャッシュの設定をするには、「 FilesMatch 」にキャッシュさせるファイルを拡張子で指定し、「 Cache-Control max-age 」にキャッシュの有効期間を秒数で指定します。 Expires and Cache-Control headers can also be included with Apache by using the mod_expires module. . . The max-age=N request directive indicates that the client allows a stored response that is generated on the origin server within N seconds — where N may be any non-negative integer (including 0).. Cache-Control: max-age=3600 In the case above, if the response with Cache-Control: max-age=604800 was generated more than 3 hours ago (calculated from max-age and the Age header), the cache couldn . .htaccess rules to set cache control. 如果标记为公共，是否应设置Cache-Control max-age？ Apache：禁用Cache-Control：max-age？ Cache-Control和max-age无法正常工作; Access-Control-Max-Age与Cache-Control; Java Spring Cache-control设置最大年龄; 缓存控制：max-age设置; headless chrome driver设置Cache-control的最大年龄 Strictly plug-n-play. Keep in mind, if you use a far future Expires header you have to change the component's filename whenever the file changes. For example, if an asset has a large max-age, then the asset can be retrieved from the browser for a long period of time without making a request to the server. . Viewing 8 replies - 1 . The max-age value is set in seconds, for example, max-age=300 for a five-minute TTL, and max-age=63072000 for two years. What this does is adding far future expires header (make sure mod_expires is loaded in your apache config if you have problems) to your static content (images, js, css, etc). You can cache the static files and improve your website's performance. So the following would be wrong: Header . The expiration date can set to be relative to either the time the source file was last modified, or to the time of the client access. The .htaccess file provides a way to give instructions to the Apache and compatible web servers. The no-cache directive means that a browser may cache a response, but must first submit a validat. Copy code. Add Cache-Control Headers. This can be configured via the .htaccess file in the website's directory . But, some files such as CSS and JS have cache control: max-age = 315360000, while some files such as PNG and SVG have cache control: max-age = 604800 . According to the Google Developers site, Cache-Control headers are all we need: The Cache-Control header was defined as part of the HTTP/1.1 specification and supersedes previous headers (for example, Expires) used to define response caching policies. Just add the following directives to your site's root .htaccess file: . Header set Cache - Control "max-age=2592000". Thread Starter longzg (@longzg) 1 week, 2 days ago. Apache The following snippet can be added to your .htaccess file to tell the server to set the Cache-Control header's max-age to 84600 seconds and to public for the listed files. I have a problem setting the cache expire date on my website. . . I decided to put all my cache-able content under a single root directory and edit the httpd.conf as. Header set Cache-Control "max-age=172800, public, must-revalidate". one month equals: 60 (seconds in a minute) x 60 (minutes in an hour) x 24 (hours in a day) x 30 (average number of days in a month) = 2592000 Common reasons for not wanting caching on a viewer's internet browser include: Constantly updated data that you do not want to be cached (e.g. The following snippet can be added to your .htaccess file to tell the server to set the Cache-Control header's max-age to 84600 seconds and to public for the listed files. 441) An . Cache-Control is an important HTTP header that allows you to define various directives letting browsers know how an asset should be cached. You can put this directive in the root of your configuration to apply site-wide . If you don't set your Cache-Control for the HTTP headers, then, you will have a longer wait times when visiting your website. hans2103 / .htaccess-mod_headers. (css|jpg|jpeg|png|gif|js|ico)$"> Header set Cache-Control "max-age=2628000, public" </filesMatch> Mein Ziel ist es, dass Updates vollständig wiedergegeben werden, sobald Sie auf die Website gehen oder sogar auf den Website-Link bei Google klicken. Browse other questions tagged apache-2.2.htaccess or ask your own question. . <filesMatch ". Soll ich das auch hinzufügen? All modern browsers support Cache-Control, so that's all you need. You can change the Varnish cache for static items like files by adding a custom .htaccess file to any desired . Pragma Header unset Cache-Control Header unset Last-Modified Header set Pragma "no-cache" Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set . Caching using .htaccess. Two things here: ExpiresDefault A2592000 = 1 month in the future. . Header set Cache-Control "max-age=2628000, public" </filesMatch> Note: The file extensions shown is an incomplete list. Google Developers website My Questions over here are : Why am I getting Cache-Control: max-age=0 on the server side ? All max-age values are in seconds, e.g. However, you can adjust these values in your .htaccess file as needed: # BEGIN Expire headers <IfModule mod_expires.c> # Turn on the module. The Overflow Blog Software is adopted, not sold (Ep. < / IfModule>. Header set Cache-Control "max-age=172800, public, must-revalidate". More. Header set Cache-Control "max-age=86400, public, must-revalidate". Specifying no-cache or max-age=0 indicates that clients can cache a resource and must revalidate . .htaccess rules to set cache control. We explicitly set the expiry time to A0 (zero) and set the Cache-Control to "no-store, no-cache, must-revalidate, max-age-0", forcing the browser never to store the file . Check the .htaccess file of your site, maybe they are being added by the hosting company. 我有几个与Cache-Control相关的查询。 如果我为静态html / js / images / css文件指定Cache-Control max-age=3600, must-revalidate，并在HTTP标头中定义了Last Modified Header： 浏览器/代理缓存（如Squid / Akamai）是否一直到源服务器以在max-age到期之前验证 ？或者它会从缓存中提供内容 . hans2103 / .htaccess-mod_headers. Common reasons for not wanting caching on a viewer's internet browser include: . In the header response, I want to remove Cache-Control's "max-age"? For Apache web servers, the best solution is to edit .htaccess to disable caching. The following are default settings on DreamHost servers and do not need to be enabled. So the following would be wrong: Header . You can put this directive in the root of your configuration to apply site-wide, but a better method is to apply the settings depending on the type of file. Shouldn't I get 200 response after the max-age expires? Cache-Control: max-age=604800 = 뒤에 적히는 숫자는 초 단위며, 저 시간 동안은 캐시의 데이터가 신선하다고 판단합니다. <FilesMatch ". OK, thank you very much. (flv|gif|jpg|jpeg|png|ico|swf|js|css|pdf)$"> Header set Cache-Control "max-age=2592000" </FilesMatch> For files with these extensions in the FilesMatch construct you will set the Cache-Control header given by the server and the max-age variable, in which the time of storing files in the cache in seconds is specified. Cache-Controlヘッダーによるブラウザキャッシュの設定. By enabling the cache feature in the .htaccess file, the resources of the website get stored on the visitor's browser enabling quick load. Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" As you can see, I'm using the exact same file expiration settings in these Cache-Control headers as in the Expires headers example. Browse other questions tagged apache-2.2.htaccess or ask your own question. stock ticker) Caching structures that you prefer to use server-side (e.g. In the example the max-age is the time in seconds with 2628000 being 1 month. 441) An . The cache control section that you have in the plugin settings that is only for HTML pages. This module controls the setting of the Expires HTTP header and the max-age directive of the Cache-Control HTTP header in server responses. <Directory "C:\somedir\cache"> Header unset Last-Modified . Search engine will rank your website higher if your website response time is faster. unset Cache-Control Header unset Last-Modified Header set Pragma "no-cache" Header set Cache-Control "max-age=0, no-cache, no-store, must-revalidate" Header set Expires "Thu, 1 Jan 1970 00:00 . This means faster load times for the user. Whereas if you enable the option for adding browser cache rule for static files in the plugin settings it will add max-age of 604800 for CSS/JS as these files gets updated often and then for others it's actually 1 year. The following are default settings on DreamHost servers and do not need to be enabled. Then put this .htaccess file in the directory and all files (including it's sub-directories will be cached for 1 year. Thread Starter longzg (@longzg) If none of Expires, Cache-Control: max-age, or Cache-Control: s- maxage appears in the response, and the response does not include other restrictions on caching, the cache MAY compute a freshness lifetime using a heuristic. Almost all website especially wordpress websites are caching their static files: Header set Cache-Control "max-age=2592000" # year By enabling the cache feature in the .htaccess file, the resources of the website get stored on the visitor's browser enabling quick load. Header set Cache-Control "max-age=84600, public" The max-age value is set in seconds, for example, max-age=300 for a five-minute TTL, and max-age=63072000 for two years. Here is an example of an Apache .htaccess configuration that sets caching for various image file types, as matched by an extension list, to one month and public access (some available options are discussed below). The following snippet can be added to your .htaccess file or Apache configuration file to tell the server to set the Cache-Control header's max-age to 31536000 seconds, as well as the directives public and immutable for the listed file extensions. This goes in your root .htaccess file but if you have access to httpd.conf that is better. Header set Cache-Control "max-age=7200, must-revalidate". More. . I don't want to completely unset Cache-Control, though -- just want to get rid of max-age. <FilesMatch ". Код: Выделить всё Accept-Ranges bytes Cache-Control max-age=600 Connection close Content-Length 10978 Content-Type text/css Date Thu, 16 Aug 2012 15:02:52 GMT Expires Thu, 16 Aug 2012 15:12:52 GMT Last-Modified Thu, 29 Mar 2012 12:57:09 GMT Server nginx/0.8.55 저 시간보다 오래된 데이터는 stale 하다고 판단하고 revalidate 합니다. Apache can define an expire time for cached data as well. However, you can adjust these values in your .htaccess file as needed: # BEGIN Expire headers <IfModule mod_expires.c> # Turn on the module. Header set Cache-Control "max-age=2592000, public". This is because some of the files shouldn't be cached such as HTML and text any changes made to the copy on a website should be immediate, so we don't cache them. Cache-Control 與max-age - TechBridge 技術共筆部落格 . This module controls the setting of the Expires HTTP header and the max-age directive of the Cache-Control HTTP header in server responses. In the header response, I want to remove Cache-Control's "max-age"? (ico|jpg|jpeg|png|gif)$">. For Apache web servers, the best solution is to edit .htaccess to disable caching. I don't want to completely unset Cache-Control, though -- just want to get rid of max-age. Hier ist mein .htaccess für Cache <filesMatch ". ExpiresDefault "access plus 2 days" ExpiresByType image/jpg "access . Header set Cache-Control "max-age=86400, public, must-revalidate". Caching instructions are often placed in .htaccess. Quick .htaccess snippet to disable browser caching by modifying Cache-Control, Pragma, and Expires headers.